PFLUGER, R.

Oil · District 9 · Lease #15021

Operator: ULTRA OIL & GAS, INC.

Fields: DARE I (COOK)

Cum Oil

265k BBL

Cum Gas

0 MCF

Wells

4

Production

2000-06 — 2026-03

Peak Month

2002-07

Production History

Cum Oil: 265,466 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,478 BBL/mo

Di (annual)

51.7%

b-factor

0.6

EUR

170,699 BBL

R-squared

0.798

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
C 5ULTRA OIL & GAS, INC.11,8002001-01-18
C 4ULTRA OIL & GAS, INC.11,9992000-12-19
C 3ULTRA OIL & GAS, INC.21,8002000-08-24
C 1ULTRA OIL & GAS, INC.12,1002000-05-10
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